From October 25 to November 1, 1987, the Thirteenth National Congress of the CPC was held in Beijing. According to Deng Xiaoping's theory of building socialism with Chinese characteristics, the congress proposed thirteen points as to what is socialism with Chinese characteristics. The congress adopted the strategy of three stages for China's economic construction: First, doubling the GNP of 1980 to end shortages of food and clothing, which was basically completed at the end of the 1980s; second, quadrupling the GNP of 1980 by the end of the 20th century, which was achieved in 1995, ahead of schedule. Third, basically realizing modernization in the middle of the 21st century, the GNP per capita reaching the level of the moderately developed countries, and people living a well-off life.